59 citations · 167 across the 15 of their papers we have counts for
9 papers · 1 filter
Electron glass effects in amorphous NbSi films
J. Delahaye, T. Grenet, C. A Marrache-Kikuchi +3
We report on non equilibrium field effect in insulating amorphous NbSi thin films having different Nb contents and thicknesses. The hallmark of an electron glass, namely the logari…
Evidence for thermal activation in the glassy dynamics of insulating granular aluminum conductance
T. Grenet, J Delahaye
Insulating granular aluminum is one of the proto-typical disordered insulators whose low temperature electrical conductance exhibits ubiquitous non-equilibrium phenomena. These inc…
Observation of thermally activated glassiness and memory dip in a-NbSi insulating thin films
Julien Delahaye, Thierry Grenet, C. Marrache-Kikuchi +2
We present electrical conductance measurements on amorphous NbSi insulating thin films. These films display out-of equilibrium electronic features that are markedly different from…
Screening and conductance relaxations in insulating granular aluminium thin films
Julien Delahaye, Thierry Grenet
We have recently found in insulating granular Al thin film a new experimental feature (Delahaye et al., Phys. Rev. Lett. 106, 186602, 2011), namely the existence of a conductance r…
Ageing and relaxation times in disordered insulators
Thierry Grenet, Julien Delahaye, M. C. Cheynet
We focus on the slow relaxations observed in the conductance of disordered insulators at low temperature (especially granular aluminum films). They manifest themselves as a tempora…
Electrical glassy behavior in granular aluminium thin films
Julien Delahaye, Thierry Grenet
We present new results obtained by field effect measurements on insulating granular Al thin films. First, reproducible and stable conductance fluctuations are seen in micron size s…
Slow Conductance Relaxation in Insulating Granular Al: Evidence for Screening Effects
Julien Delahaye, Jean Honoré, Thierry Grenet
It is shown that the conductance relaxations observed in electrical field effect measurements on granular Al films are the sum of two contributions. One is sensitive to gate voltag…
Coexistence of anomalous field effect and mesoscopic conductance fluctuations in granular aluminium
J. Delahaye, T. Grenet, F. Gay
We perform electrical field effect measurements at 4 K on insulating granular aluminium thin films. When the samples size is reduced below 100 micrometers, reproducible and stable…
Anomalous field effect and glassy behaviour in granular aluminium thin films: electron glass?
Thierry Grenet, Julien Delahaye, Maher Sabra +1
We present a study of non-equilibrium phenomena observed in the electrical conductance of insulating granular aluminium thin films. An anomalous field effect and its slow relaxatio…